datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,05 0:30:00,30 ,       0,336.3568,28.46953,70.96215
sgpcmbeC1.c1,2004,05 1:30:00,30 ,       0,691.1145,48.21367,135.4337
sgpcmbeC1.c1,2004,05 2:30:00,31 ,       0,2216.194,143.3688,420.2577
sgpcmbeC1.c1,2004,05 3:30:00,30 ,       0,985.1699,92.03098,236.6801
sgpcmbeC1.c1,2004,05 4:30:00,28 ,       0,1945.815,119.7799,390.8438
sgpcmbeC1.c1,2004,05 5:30:00,28 ,       0,1183.792,73.73222,237.9985
sgpcmbeC1.c1,2004,05 6:30:00,28 ,       0,1368.864,84.07557,270.4473
sgpcmbeC1.c1,2004,05 7:30:00,31 ,       0,1855.249,121.1892,391.3988
sgpcmbeC1.c1,2004,05 8:30:00,31 ,       0,767.5521,58.18018,150.5733
sgpcmbeC1.c1,2004,05 9:30:00,31 ,       0,976.0822,56.10307,174.7805
sgpcmbeC1.c1,2004,0510:30:00,31 ,       0,858.6684, 50.7657,155.1273
sgpcmbeC1.c1,2004,0511:30:00,31 ,       0,246.7798,29.28581,55.92984
sgpcmbeC1.c1,2004,0512:30:00,31 ,       0, 414.509,37.50096,86.27594
sgpcmbeC1.c1,2004,0513:30:00,31 ,       0,354.7696,34.07363,79.37348
sgpcmbeC1.c1,2004,0514:30:00,31 ,       0,1065.812,54.59981,193.3635
sgpcmbeC1.c1,2004,0515:30:00,31 ,       0, 962.503,59.96065,175.5786
sgpcmbeC1.c1,2004,0516:30:00,31 ,       0,1131.624,51.44787,201.7599
sgpcmbeC1.c1,2004,0517:30:00,31 ,       0,1605.554,61.97655, 287.024
sgpcmbeC1.c1,2004,0518:30:00,31 ,       0, 1137.63,51.40971,206.3902
sgpcmbeC1.c1,2004,0519:30:00,31 ,       0,656.0929,33.89332,118.2876
sgpcmbeC1.c1,2004,0520:30:00,31 ,       0,455.2298,27.30278, 84.7067
sgpcmbeC1.c1,2004,0521:30:00,31 ,       0,558.6506,34.12251,111.0404
sgpcmbeC1.c1,2004,0522:30:00,31 ,       0,928.2526, 51.1632,179.4909
sgpcmbeC1.c1,2004,0523:30:00,30 ,       0, 234.113,15.17698,42.71958